| 用铷原子钟对PC进行时间校准及其误差分析 |
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| 引用本文： | 伍贻威,龚航,朱祥维,雍少为.用铷原子钟对PC进行时间校准及其误差分析[J].宇航计测技术,2011(4):52-55. |
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| 作者姓名： | 伍贻威 龚航 朱祥维 雍少为 |
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| 作者单位： | 国防科技大学电子科学与工程学院卫星导航研发中心; |
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| 摘 要： | 个人计算机（以下简称PC）的系统时间由其自带的RTC晶振提供，其时间频率准确度并不高。为此，综合考虑各种方案，采用外部校准时间的方法提高PC时间的准确度。通过时间间隔测量的方法获得了作为校准时间结果的钟差值，并对实验结果做了详细分析。测试结果表明，PC与铷钟同步标准偏差小于1ms。经过时间校准后的PC可以作为网络时间服务器。
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| 关 键 词： | PC 时间校准 时间间隔测量 时间服务器 |
Calibrating time of PC by a Rubidium Clock and Its Error Analysis |
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| WU Yi-wei GONG Hang ZHU Xiang-wei YONG Shao-wei.Calibrating time of PC by a Rubidium Clock and Its Error Analysis[J].Journal of Astronautic Metrology and Measurement,2011(4):52-55. |
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| Authors: | WU Yi-wei GONG Hang ZHU Xiang-wei YONG Shao-wei |
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| Institution: | WU Yi-wei GONG Hang ZHU Xiang-wei YONG Shao-wei (Satellite Navigation R&D Center,School of Electronic Science and engineering,National University of Defense Technology,Changsha 410073) |
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| Abstract: | The Personal computer(PC) system time is provided by the RTC oscillator.Its time frequency accuracy is not high.Many methods are compared and a time calibration method is used to improve the accuracy of PC time by a external clock.A measurement method to get the clock offset is designed by a time interval counter and the test results are analyzed in detail.The test results indicate that the standard deviation of synchronization error between the PC and the rubidium clock is less than 1ms.After time calibrat... |
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| Keywords: | Personal computer Time calibration Time interval measurement Time server |
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